VOC (Volatile Organic Compound) monitor
Introduction to VOC monitors
FORBIX SEMICON VOC monitor checks for the presence of volatile organic compounds in the air. It gives a collection concentration reading of VOC gases (usually in vapour form). This VOC monitor gives a averaged value of total VOC count (TVOC) of the compounds like, Benzene, Xylene, Toluene, Smoke, Alcohol, Hydrocarbons, LPG, Formaldehyde, PVC solvents, Petrol, CNG, Diesel, IPA solutions, gluing/bonding agents etc.
Following is the relative sensitivity of the vapours:
VOC readings on the monitor
Concentration of gases shown in ppm (parts per million) 0-800 ppm. Air quality index is shown as the following (left hand bottom):
The beeping sound / alarm in the unit has been permanently removed from the newer models, after repeated feedback from customers.
The unit is a table-top sensing unit with LCD. To start the machine, first keep it in a fresh room make sure the reading are stable at 0 ppm. It takes a booting time of around 30 seconds for power up (before the 1st reading appears). Soon after that the readings will show the for the ambient room conditions.
This monitor shows the reading of odour in a ambient air. The odour may be fresh or even stinking. The unit can convert smell into electrical values. The monitor captures the odour particles from the air and converts into electrical impulses. The electrical pulses then are converted to ppm readings that is displayed.
How to operate the VOC monitor
Important notice to operate the VOC monitor:
Before exposing to stale air, its recommended to stabilize VOC monitor readings. Usually in a clean room. The device should stabilize to readings between 3-7 ppm (or at least below 10 ppm). This procedure might take few minutes. Once the unit displays alarm/poor condition (of ambient air), it should turned off. This avoids sensor degradation because of internal corrosion. Hence, improves sensor life and future performance as well
The following conditions must be strictly avoided:
VOC sensor technical description
The sensor is inside the left orifice of the device. Sensor composition is micro Aluminum Oxide Al2O3 ceramic tube. In conduction with Tin Oxide SnO (Stannous Oxide) sensitive layer. It has has a measuring electrode and a heater. The heater provides the necessary work conditions for the sensor. A change in the gas concentration, changes the electrical characteristics of SnO. This is hence proportional to change in current flowing through it. The change in current is proportional to the gas concentration. The device meter is NOT a measuring device for individual gas concentration of VOCs. Instead it shows an indicative figure of room air quality (especially odour). It is rather a indicator of TVOC in the air.
Operating Power supply:
The VOC monitor operates at 12VDC. operates on 12VDC power supply. We provide 220VDC to 12VDC converter adapter along with the package. User can use a 12V battery EXTERNAL pack as well. The life of the battery would depend on the battery capacity. On an average, 4-6AH/12VDC rechargeable lead acid battery may last for 6-8 hrs.
We produce 2 varieties of dust monitors:
Product catalog and documents